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打电话并保持通话质量的能力。
Ability to Make and Hold a call.
youdao
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也可以取下耳机，保持你通话的私密性；
May also take down the earphone, maintains privacy which you talk over the telephone;
youdao
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也可以取下耳机，保持你通话的私密性；
May also take down the earphone, maintains privacy which you talk over the telephone;
youdao